Combination-lock



L. COHEN COMBINATION LOCK APPLICATION FILED AUG. 27, I9I 9.

1,355,387, Patented Oct. 12, 1920.

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UNITED STATES PATENT creme.

- LOUIS COHEN, OF JOHNSTOWN, NEW YORK.

COMBINATION-LOCK.

Specification of Letters Patent.

Patented. Oct. 12, 1920.

Application filed August 27, 1919.- Serial No. 320,205. I

To all whom 2'25 may concern Be it known that I, LOUIS COHEN, a c1t1- zen of the United States, residing'at Johnstown, in the county of Fulton and State of New York, have invented a new and useful Combination-Lock, of which the following is a specification.

The object of this invention is the provision of a lock in which a single permutation locking mechanism operates to lock or unlock a pair of shackles, the device being so arranged that the shackles may be inclependently retained in locked position, the invention residing in the novel form, arrangement and combination of parts to be hereinafter more specifically pointed out and claimed, it bein within the province of the disclosure to improve generally and to enhance the utility of devices of that class to which the present invention appertains. Also be it understood that slight changes in the embodiment of the invention may be made within the scope of what is claimed, without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing Figure 1 is a face View of the lock.

Fig. 2 is a sectional view of the case looking from the rear with the locking mechanism in elevation.

Fig. 8 is a vertical transverse sectional view.

Referring to the drawing by characters of reference, there is shown at 1, a lock casing, having at the top on either side of its center, a shackle 2. The shackles and locking mechanism for each being identical, it is thought a description of one will sutfice.

One leg 3 of the shackle is adapted to be seated in a socket in the head of the lock casing and the other leg 1 projects through an aperture 5 into the casing, and is provided at its lower end with a notch 6. A pin 6 through the stem 4 prevents complete withdrawal of the stem and permits swiveling of the shackle on the lock casing.

A latch 7 for each of the shackles pivoted on a stud 8 has a transversely extending arm 9, adapted to engage the notch 6 in its respective shackle. A disk 10 constituting an index plate is mounted for rotation on a stem 11 and is located on the face of the lock case. The stem 11 projects from the front of the index plate to form an operating handle 12 and back of the 10 has a bearing 13 in the case.

The stem carries within the case a series of loosely mounted disks 14E each having a peripheral notch 15 and being provided with outstanding pins 16 which are adapted to be engaged by like pins on the next adjacent disk. This engagement being ef fected by rotation of the stem 11, first in one direction, then in the opposite direction to bring the notches 15 on the disks into register and opposite a tooth 17 formed on the lower end of a depending arm 18 on each of the latches 7. The disks and pins have given relation with the index on the plate 10, so that as a specified mark on the index is registered with the pointer 19 on the case, the notch 15 will he in register with the tooth 17.

The disk and pin mechanism being an old and well known permutation lock mechanism, it is thought a more extended description is unnecessary.

The stem 11 carries on its inner end a disk 20 fixed against rotation on the stem by means of a nut 30, the disk having a pin 21 for engagement with the pin 16 on the adjacent disk 14;, the disk also having a notch 22, the edges of which are curved to form a cam 23 for lifting the tooth 17 out of the notches 15.

A tension spring 24 for each of the latches serves to move the said latches to unlocked position, when the notches in the disks are moved to the proper position.

In practical operation, the combination for opening the shackles may be the same or different for each of the shackles, and may be changed by removing the end disk 20 and rearranging the loose disks 14:.

The lock may be used with both of the shackles engaging a staple to be looked, as shown in dotted lines Fig. 1, in which case unauthorized opening of the lock is rendered doubly diflicult. In case but one shackle is used as a lock, the other may be used for securing the lock against misplacement or loss.

Having thus described the invention, what is claimed is 1. In a device of the class described, a case, a pair of shackles mounted in the case, a pair of separately mounted latches for independently engaging the shackles in locked position and means for locking the latches in engagement with the shackles,

plate 2. In a device of the class described, a' case, a pair of shackles mounted in the case, a pair'of latches for engaging the shackles, a permutation lock mechanism, said mecha= nism having a disk provided with a single notch whereby one of the shackles may be unlocked and the other retained in locked position, and means for operating the disk.

3. In a device of the class described, a case, 7 a pair of shackles independently mounted in the case, a pair of latches for engaging the shackles in locked position,

and a permutation lock mechanism for locking the latches into engagement with the shackles, said mechanism including a disk having a notch 'for' releasing either of the latches and a disk having a cam for removing the latches from the notch.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in thepresence of two Witnesses.

EUGENE MOORE JULIA F. VAN SICKLER. 

